Dang 1. iu ch amoniac:Cu 1. Cho hn hp ng th tch N2 v H2 c cho
qua bt st nung nng th c 60% H2 tham gia phn ng.Hy xc nh thnh phn %
theo th tch cc kh trong hn hp to thnh.Cu 2. Cn ly bao nhiu lt N2 v
H2 (kc) iu ch c 51g NH3. Bit hiu sut phn ng l 25%. Cu 3:Cho 4 lt
N2v 14 lt H2vo bnh phn ng. Hn hp thu c sau phn ng c th tch bng 16,4
lt. (th tch cc kh c o trong cng iu kin). Tnh th tch kh NH3to thnh v
hiu sut phn ng?A.0,8 lt v 10%.B.1,6 lt v 20%.C.2,4 lt v 40%. D.3,36
lt v 20%.Cu 4*.Mt hn hp kh gm N2v H2c t khi so vi hiro l 4,9. Cho
hn hp i qua cht xc tc nung nng c hn hp mi c t khi so vi hiro l
6,125. Hiu sut tng hp NH3l:A.42,85%B.16,67%C.40%D.83,33%Dng 2:Kim
loi + HNO3Cu 1:Khi ha tan hon ton 60,0 gam hn hp ng v ng (II) oxit
trong 3,0 lt dung dch HNO31,00M ly d, thy thot ra 13,44 lt kh NO (
ktc). a) Thnh phn % ca Cu trong hn hp l:A.48%.B.72%.C.60%.D.96%.b)
Nng mol/l ca HNO3trong dung dch thu c (gi s th tch dung dch thay i
khng ng k) l: A.0,08M. B.0,18M.C.0,26M.D.0,34M.Cu 2:Cho 4,76 gam hp
kim Zn v Al vo dd HNO3long ly d th thu c 896 ml (o kc) kh N2O (sn
phm kh duy nht). Thnh phn phn trm v khi lng ca km v nhm trong hn hp
ln lt l: A.45,26% ; 54,74%.B.54,62% ; 45,38% C.53,62%; 46,38%.
D.44% ; 56%Cu 4:Cho m gam hn hp Fe v Cu tc dng vi dung dch HNO3c
ngui d thu c 4,48 lt kh (ktc). Nu cho m gam hn hp trn tc dng vi
dung dch HCl d thu c 5,6 lt kh (ktc). Gi tr m l.
A.20,4.B.25,2.C.26,8.D.15,4.Cu 5: Cho m gam hn hp X gm Al, Cu vo
dung dch HCl (d), sau khi kt thc phn ng sinh ra 3,36 lt kh ( ktc).
Nu cho m gam hn hp X trn vo mt lng d axit nitric (c, ngui), sau khi
kt thc phn ng sinh ra 6,72 lt kh NO 2 (sn phm kh duy nht, ktc). Gi
tr ca m lA. 15,6. B. 10,5. C. 11,5. D. 12,3.Cu 6. Cho m gam Fe vo
dung dch HNO3 ly d ta thu c 8,96 lit(kc) hn hp kh X gm 2 kh NO v
NO2 c t khi hi hn hp X so vi oxi bng 1,3125. Gi tr ca m l A. 0,56
gam. B. 1,12 gam. C. 11,2 gam. D. 5,6 gam. Cu 7. Cho 1,86 gam hn hp
Al Mg, Cu tc dng vi dung dch HNO3 long d th thu c 560 ml lt kh N2O
(ktc, sn phm kh duy nht) bay ra. Khi lng mui nitrat to ra trong
dung dch l: A. 40,5 gam. B. 14,62 gam. C. 24,16 gam. D. 14,26
gam.Cu 8. Cho a gam bt Al tc dng va vi dung dch HNO3 long thu c
dung dch A ch cha mt mui duy nht v 0,1792 lt (ktc) hn hp kh NO, N2
c t khi hi so H2 l 14,25. Tnh a ? A. 0,459 gam. B. 0,594 gam. C.
5,94 gam.D. 0,954 gam. Cu 9:Cho 3,6 gam Mg tc dng ht vi dd HNO3(d),
sinh ra 2,24 lit kh X (sn phm kh duy nht). Kh X l.
A.N2OB.NOC.NO2D.N2Dng 3:Nhit phn mui nitrat:Cu 1:Nung mt lng xc nh
mui Cu(NO3)2. Sau mt thi gian dng li ngui ri em cn thy khi lng gim
54 gam. Khi lng Cu(NO3)2 b phn hy l :A.87 gam.B.94 gam.C.69 gam.
D.141 gam.Cu 2.Nung 6,58 gam Cu(NO3)2trong bnh kn khng cha khng kh,
sau mt thi gian thu c 4,96 gam cht rn v hn hp kh X. Hp th hon ton X
vo nc c 300 ml dung dch Y. Dung dch Y c pH bngA.2.B.3.C.4.D.1.Cu
3:un nng 66,2 gam Pb(NO3)2sau phn ng thu c 55,4 gam cht rn. Hiu sut
ca phn ng l :A.30%.B.70%.C.80%.D.50%.Cu 4:Nhit phn hon ton 9,4 gam
mui nitrat ca kim loi M thu c 4 gam cht rn. Kim loi M l A.Cu. B.Zn.
C.Fe. D.Mg. Dang3. H3PO4 + OH-1. t chy hon ton 6,2g photpho trong
oxi ly d. Cho sn phm to thnh tc dng vi 150ml dd NaOH 2M. sau phn
ng, trong dd thu c c cc mui no?A. NaH2PO4, Na2HPO4 B. Na2HPO4,
Na3PO4 C. NaH2PO4, Na3PO4 D. Na3PO42. Trn ln 200 ml dung dch NaOH
1M vi 150 ml dung dch H3PO4 0,5 M .Mui to thnh trong dung dch sau
phn ng .A. NaH2PO4 , Na2HPO4 B. Na2HPO4, Na3PO4 C. NaH2PO4 , Na3PO4
D. Na3PO4 3. thu c mui pht pht trung ho cn Vml dung dch NaOH 1,00 M
cho tc dng vi 50,0 ml dung dch H3PO4 0,50 M .V c gi tr .A. 50 ml B.
25 ml C. 100 ml D. 75 ml 4. t chy hon ton 6,2g P trong oxi d. Cho
sn phm to thnh tc dng vi dung dch NaOH 32% va to ra mui Na2HPO4.
Khi lng dung dch NaOH dng l :A. 50gB. 200gC. 150gD. 100g5. Thm 250
ml dung dch NaOH 2M vo 200 ml dung dch H3PO4 1,5M.Mui to thnh c khi
lng tng ng lA. 14,2g Na2HPO4;32,8gNa3PO4B. 24,0g NaH2PO4;14,2g
Na2HPO4C. 12,0g NaH2PO4;28,4gNa2HPO4D. 28,4g Na2HPO4;16,4gNa3PO46.
cho 4,4g NaOH vo dd cha 3,59g H3PO4. sau phn ng em c cn dd thu C.
nhng mui no c to nn v khi lng mui khan thu c l bao nhiu?A. Na2HPO4:
1,42g v Na3PO4: 4,92gB. Na3PO4: 6 gC. NaH2PO4: 4,92g v Na2HPO4:
1,42gD. kt qu khc7. Cho 44g NaOH vo dung dch cha 39,2g H3PO4. Sau
khi phn ng xy ra hon ton , em c dung dch thu c n cn kh. Hi nhng mui
no c to nn v khi lng mui khan thu c l bao nhiu ?A. Na3PO4 v 50,0g
C. NaH2PO4 v 49,2g ; Na2HPO4 v 14,2gB. Na2HPO4 v 15,0g D. Na2HPO4 v
14,2g ; Na3PO4 v 49,2g 8. Cho 1000 ml dung dch H3PO4 0.1M tc dng vi
100ml Ca(OH)2 0.75M.Tnh nng mol/lt ca cht trong dung dch.9.Cho 142g
P2O5 vo 500g dung dch H3PO4 27.72% thu c dung dch A .Tnh nng %
H3PO4 trong dung dch A10: Hp th hon ton 2,688 lt NH3 (ktc) vo dung
dch cha 3,92 gam H3PO4. Mui thu c l: A. NH4H2PO4.B. (NH4)2HPO4.C.
(NH4)3PO4 D. NH4H2PO4 v (NH4)2HPO4.11. Cho 1,98 g (NH4)2SO4 tc dng
vi dung dch NaOH thu c mt sn phm kh. Ho tan kh ny vo dung dch cha
5,88 gam H3PO4. Mui thu c l:A. NH4H2PO4.B. (NH4)2HPO4.C.
(NH4)3PO4.D. Khng xc nh c
